Solderless connecter



' Sept: 24, 1935. 'H. J. L. FRANK SOLDERLESS CONNECTER Filed Aug. 4, 19:54

\A/ INVENTOR.

Patented 2 1935 somaamrss comma Harrison J. L; Frank, Detroit, Micla, assignor to Bulldog Electric Products ompany, Detroit,

ginia Mich a corporation of West Vir Application August 4, 1934, Serial No. 738,448 a Claim; (c1. 113-259) This application relates to electrical connecters and particularly to those used for effecting mechanical and electrical connection of a cable terminal to electrical apparatus, such as a connection strap, bus bar, or the like, without the use of solder, and therefore known as solderless connecters.

For years it was common practice to connect cable terminals to electrical apparatus by means of cable terminal lugs of the type comprising a tubular element receiving the cable terminal, and in which the cable terminal was securely faste'ned by means of solder, the lug in turn being connected to the apparatus by means of a screw or the like. The use of such connecters has for some time been regarded with disfavor and it has often been attempted to devise satisfactory The results of these at-' are more 'efllcient for the purposes of securing 30 cableterminals in proper mechanical and electrical connection than solderless connecters heretofore known. a v

A principal characteristic that distinguishes the connecter of this application from connecters 35 heretofore known is the characteristic that the cable terminal is secured in the connecter, not

by pressure clamping alone, as is the case with many connecters now known, but, in addition, by an interlock forming shear or bite action 40 which is much more satisfactory for the purposes intended.

One form of connecter is shown in the append- 1 ed drawing, and this form will be described in detail with reference to this drawing. I

45 In the drawing,

Figures 1 and 2 show in sectional elevation and side view one type of connecter.-

The connecter of Figures 1 and 2 comprises a sheetmetal strap bent to form a U having oppo- 5 site sides ill, a bight l2, and an extension 14, by mea'ns'of which the-connecter may be attached to a bus bar it or the'like through screw it. The opposite sides of the connecter are provided with alined partially cut slots l1, and the tongues 55 I8 and It formed by these "slots are bent in from opposite sides of the connecter at different levels thereof to form a pair of clamping surfaces 'between which may be passed the terminal of a cable 2| A screw 22 is threadedly secured in the bight l2 and may be tightened down to move 6 the clamping tongue it towards the clamping tongue I! in a manner to securely clamp the terminal 20 in and to the connecter. The tongue l9 bridges the sides Ill so that these sides form abutments for the tongue l0. 10

One action resulting from tightening down the screw 22 is a clamping action. In the connecter shown, the clamping action is aided by an interlock which is provided by virtue of the provision of male and female formations 232| in 15 the tongues lBI9,-thc formations distorting the terminal to prevent easy withdrawal thereof from the connecter. If desired, the formations may be omitted, in which case clamping action alone may be relied upon to secure the terminal 20 properly.

Now having described one embodiment of the invention, reference is had to the following claims which determine the scope thereof.

What I claim is: 25

1. A cable terminal connecter comprising a strap bent to provide a U having opposite sides and a bight, tongues cut from saidsides to provide alined apertures therein and bent inwardly of the U at different levels to provide clamping parts which may receive between them a cable terminal passed through .the alined apertures of the connecter sides. I

2. A cable terminal connecter comprising a strap bent to provide a U having opposite sides and a bight, tongues cut from said sides to provide alined apertures therein and bent inwardlyof the U at different levels to provide clamping parts which may receive between them a cable terminal" passedthrough the alined apertures of the con- 40 necter sides, and a screw passing through the bight of the U and manipulable for urging one of said tongues towards the other to clamp a cable terminal therebetween.

3. A cable'terminal connecter comprising a strap bent to provide a U having opposite sides and abight, tongues cut from said sides to provide alined apertures therein and bent inwardly of the U at'diil'erent levelsto provide clamping parts which may receive between them a cable terminal passed through the alined apertures of the connecter sides, at least one of the tongues having a deformation for'deforming the terminal clamped thereby.

4. A cable terminal connecter comprising a s5 strap bent to provide a U having opposite sides and a bight, tongues out from said sides to provide alined apertures therein and bent inwardly of the U at difl'erent levels to provide clamping parts which may receive between them a cable terminal passed through the alined apertures of the connecter sides, one oi the tongues bridging the connecter sides so that both sides-form abutments for this tongue.

5. A cable terminal connecter comprising a.

strap bent to provide a U having opposite sides and a bight, tongues cut from said sides to provide alined apertures therein and bent inwardly of the U at diflerent levels to provide clamping parts which may receive between them a cable terminal passed through the alined apertures of the connecter sides, and a screw passing through the bight of the U and manipulable for urging one of said tongues towards the other to clamp a cable I clamped thereby, and a screw passing through Patent No. 2,015,177. I

the bight of the U and manipulable Ior urging HARRISON J. L. FRANK.

It is hereby certified that error appears in the d i I g I r prmted specification of the ab numbered patent requ ring correction as follows: We

claim 8, for "connected" read connecter;

one 01 said tongues towards the other to clamp a cable terminal therebetween.

7. A cable terminal connecter comprising a strap bent to provide a U having opposite sides and a bight, tongues cut from said sides to pro- 5 vide alined apertures therein and bent inwardly of the U at different levels to provide clamping parts which may receive between them a cable terminal passed through the alined apertures of the connecter sides, at least one of the tongueshaving a deformation i'or deforming the terminal clamped thereby, and a screw passing through the bight of the U and manipulable for urging one of said tongues towards the other to clamp a cable terminal therebetween, one 01' the tongues bridging the connecter sides so that both sides 'rorm abutments for this tongue.

8. A cable terminal connecter comprising a strap bent to provideva U having opposite sides and a bight, tongues cut from said sides to pro- 20 videalined apertures therein and bent inwardly of the U at different levels to provide clamping parts which-may receive between thema cable terminal passed through the alined apertures, of the =connected sides, at least one of the tongues hav- 25 ing a deformation tor deforming the terminal clamped thereby; and a screw passing through the bight oi the U and manipulable tor urging one of said tongues towards the other to clamp acable terminal therebetween, the tongue not so urged 30 by the screw bridging the connecter sides so that both sides form abutments for this tongue.

' HARRISON J. L.

CERTIFICATE OF CORRECTlON.

September :4. 1935.

Page 2, second column, line 25,

be read with thiscorrectiOn therein that the same may conform to; the record of the case in the Patent Office.

(Seal) Leslie Frazer Acting :Commissioner of Patents.

strap bent to provide a U having opposite sides and a bight, tongues out from said sides to provide alined apertures therein and bent inwardly of the U at difl'erent levels to provide clamping parts which may receive between them a cable terminal passed through the alined apertures of the connecter sides, one oi the tongues bridging the connecter sides so that both sides-form abutments for this tongue.

5. A cable terminal connecter comprising a.

strap bent to provide a U having opposite sides and a bight, tongues cut from said sides to provide alined apertures therein and bent inwardly of the U at diflerent levels to provide clamping parts which may receive between them a cable terminal passed through the alined apertures of the connecter sides, and a screw passing through the bight of the U and manipulable for urging one of said tongues towards the other to clamp a cable I clamped thereby, and a screw passing through Patent No. 2,015,177. I

the bight of the U and manipulable Ior urging HARRISON J. L. FRANK.

It is hereby certified that error appears in the d i I g I r prmted specification of the ab numbered patent requ ring correction as follows: We

claim 8, for "connected" read connecter;

one 01 said tongues towards the other to clamp a cable terminal therebetween.

7. A cable terminal connecter comprising a strap bent to provide a U having opposite sides and a bight, tongues cut from said sides to pro- 5 vide alined apertures therein and bent inwardly of the U at different levels to provide clamping parts which may receive between them a cable terminal passed through the alined apertures of the connecter sides, at least one of the tongueshaving a deformation i'or deforming the terminal clamped thereby, and a screw passing through the bight of the U and manipulable for urging one of said tongues towards the other to clamp a cable terminal therebetween, one 01' the tongues bridging the connecter sides so that both sides 'rorm abutments for this tongue.

8. A cable terminal connecter comprising a strap bent to provideva U having opposite sides and a bight, tongues cut from said sides to pro- 20 videalined apertures therein and bent inwardly of the U at different levels to provide clamping parts which-may receive between thema cable terminal passed through the alined apertures, of the =connected sides, at least one of the tongues hav- 25 ing a deformation tor deforming the terminal clamped thereby; and a screw passing through the bight oi the U and manipulable tor urging one of said tongues towards the other to clamp acable terminal therebetween, the tongue not so urged 30 by the screw bridging the connecter sides so that both sides form abutments for this tongue.

' HARRISON J. L.

CERTIFICATE OF CORRECTlON.

September :4. 1935.

Page 2, second column, line 25,

be read with thiscorrectiOn therein that the same may conform to; the record of the case in the Patent Office.

(Seal) Leslie Frazer Acting :Commissioner of Patents. 

